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          GNU binary utilities —— size
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GNU binary utilities (GNU Binutils) version 2.42: —— size
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<hr>
<p><strong>个人笔记，仅供参考！！</strong></p>
<p>size [-A|-B|-G|–format&#x3D;compatibility] [–help] [-d|-o|-x|–radix&#x3D;number] [–common] [-t|–totals] [–target&#x3D;bfdname] [-V|–version] [-f] [objfile…]</p>
<p>GNU size 工具列出每个二进制文件的节大小和总大小。如果未指定文件，则默认使用 a.out。<br>命令行选项的含义如下：</p>
<h4 id="A-B-G-–format-x3D-compatibility"><a href="#A-B-G-–format-x3D-compatibility" class="headerlink" title="-A -B -G –format&#x3D;compatibility"></a>-A -B -G –format&#x3D;compatibility</h4><p>使用这些选项之一，可以选择输出格式：</p>
<p>-A 或 –format&#x3D;sysv：使用 System V size 格式</p>
<p>-B 或 –format&#x3D;berkeley：使用 Berkeley size 格式（默认）</p>
<p>-G 或 –format&#x3D;gnu：使用 GNU 格式</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">$ size --format=Berkeley ranlib size</span><br><span class="line">   text    data     bss     dec     hex filename</span><br><span class="line"> 294880   81920   11592  388392   5ed28 ranlib</span><br><span class="line"> 294880   81920   11888  388688   5ee50 size</span><br></pre></td></tr></table></figure>
<p>Berkeley 输出格式将只读数据计入 text 列，而非 data 列；dec 和 hex 列分别以十进制和十六进制显示 text、data 和 bss 列的总和。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">$ size --format=GNU ranlib size</span><br><span class="line">      text       data        bss      total filename</span><br><span class="line">    279880      96920      11592     388392 ranlib</span><br><span class="line">    279880      96920      11888     388688 size</span><br></pre></td></tr></table></figure>
<p>GNU 格式将只读数据计入 data 列，而非 text 列，仅在 total 列显示总和。</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line">$ size --format=SysV ranlib size</span><br><span class="line">ranlib  :</span><br><span class="line">section         size         addr</span><br><span class="line">.text         294880         8192</span><br><span class="line">.data          81920       303104</span><br><span class="line">.bss           11592       385024</span><br><span class="line">Total         388392</span><br><span class="line"></span><br><span class="line">size  :</span><br><span class="line">section         size         addr</span><br><span class="line">.text         294880         8192</span><br><span class="line">.data          81920       303104</span><br><span class="line">.bss           11888       385024</span><br><span class="line">Total         388688</span><br></pre></td></tr></table></figure>

<h4 id="–help-h-H"><a href="#–help-h-H" class="headerlink" title="–help -h -H -?"></a>–help -h -H -?</h4><p>显示可接受参数和选项的摘要。</p>
<h4 id="d-o-x-–radix-x3D-number"><a href="#d-o-x-–radix-x3D-number" class="headerlink" title="-d -o -x –radix&#x3D;number"></a>-d -o -x –radix&#x3D;number</h4><p>控制每个节的大小显示格式：</p>
<ul>
<li><p>-d 或 –radix&#x3D;10：十进制</p>
</li>
<li><p>-o 或 –radix&#x3D;8：八进制</p>
</li>
<li><p>-x 或 –radix&#x3D;16：十六进制</p>
</li>
</ul>
<p>总大小始终以两种基数显示；对于 -d 或 -x，显示十进制和十六进制；对于 -o，显示八进制和十六进制。</p>
<h4 id="–common"><a href="#–common" class="headerlink" title="–common"></a>–common</h4><p>显示每个文件中的公共符号总大小。使用 Berkeley 或 GNU 格式时，这些符号包含在 bss 大小中。</p>
<h4 id="t-–totals"><a href="#t-–totals" class="headerlink" title="-t –totals"></a>-t –totals</h4><p>显示所有列出的对象的总数（仅适用于 Berkeley 或 GNU 格式）。</p>
<h4 id="–target-x3D-bfdname"><a href="#–target-x3D-bfdname" class="headerlink" title="–target&#x3D;bfdname"></a>–target&#x3D;bfdname</h4><p>指定 objfile 的目标代码格式为 bfdname。通常不需要此选项，因为 size 可以自动识别许多格式。</p>
<h4 id="v-V-–version"><a href="#v-V-–version" class="headerlink" title="-v -V –version"></a>-v -V –version</h4><p>显示 size 的版本号。</p>
<h4 id="f"><a href="#f" class="headerlink" title="-f"></a>-f</h4><p>被忽略。此选项由其他版本的 size 程序使用，但不受 GNU Binutils 版本支持。</p>
<h4 id="参考连接："><a href="#参考连接：" class="headerlink" title="参考连接："></a>参考连接：</h4><p>【1】<a target="_blank" rel="noopener" href="https://sourceware.org/binutils/docs-2.42/binutils/size.html">https://sourceware.org/binutils/docs-2.42/binutils/size.html</a></p>

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